Design of a hydrodynamically lubricated plain bearing
Sommerfeld number, attitude angle, friction and flow numbers, plus load capacity, friction coefficient and lubricant flow for a hydrodynamically lubricated plain (journal) bearing, from length ratio, eccentricity, clearance ratio, radius, speed and viscosity.
Load capacity, F9164.259597585387 N
Attitude angle, β37.43913041863242 deg
Coefficient of friction, µ0.0011991794475183916
Lubricant flow, q1.2301057181640112 l/h
Sommerfeld number, S9.11585759208161
Attitude angle (dimensionless calc), β37.43913041863242 deg
Friction number, cµ1.1991794475183915
Flow number, cq0.6797826582340565
Method & references
- Hydrodynamic plain bearing design via interpolation between the short (Ocvirk) and infinitely-long (Sommerfeld) bearing solutions (Andres, 1989).
The computation is a literal port of the original client-side JavaScript from /calculators/e9_2.htm. Results are verified equal to the original by an automated golden-master test. No formula has been re-derived or “improved”.